this post was submitted on 19 Sep 2023
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Apple

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iPhone 15 can limit battery charge to 80%. Does this mean there’s now battery passthrough? (www.macrumors.com)
submitted 1 year ago by hermes2000@infosec.pub to c/apple_enthusiast@lemmy.world
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I limit my laptop battery charge to 80% with a third party software tool. Laptops can generally bypass the battery and directly power themselves from the wall.

Does this new 80% battery limit setting imply that the new iPhones are able to do the same? Implication would be less battery wear while docked on a desk/in a car or due to long “AAA” gaming sessions, since it will draw power direct from the wall rather than using the battery as a middleman.

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[–] scytale@lemm.ee 21 points 1 year ago (14 children)

My question is why only on a new model? Can’t this be done at the software/firmware level so it can work on earlier models that are still supported with updates?

[–] hermes2000@infosec.pub 33 points 1 year ago (9 children)

The charitable thinking was that it’s only on the new models because they actually modified the power delivery circuitry to allow bypassing the battery for power. As in, a reasonable hardware limitation that prevents any older models from doing it.

The less charitable thinking is that it’s arbitrary software lock, which is unfortunately not entirely out of character for the Apple either 😅.

[–] NotMyOldRedditName@lemmy.world 13 points 1 year ago (5 children)

Apple has the same feature on their laptops, but it's "AI" driven so it can decide for you if you want 85% or 100%. Except it's a fucking joke and almost always charges it to 100% and they don't give you a way to say fuck the AI let me decide.

The worse it is, the more money they make on battery replacements.

[–] Onse@lemmy.ml 9 points 1 year ago (1 children)

For me it’s even worse: it will charge to 80% during the times I’m working. So, when I unplug the MacBook to work somewhere off a power source, I’m left with 80%. Then, when I finish my work day, it immediately charges to 100% and stays that way until the next morning. It’s the complete opposite of what makes sense.

[–] deleted@lemmy.world 6 points 1 year ago

The AI knows what’s good for you. It’s a sign to have more work life balance. /s

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